Oil-torch.



W. H. DIFFENDML OiL DRCH.

APPLicATmN min APR.30,191B.

Patented Sept. 17,

lae

"icc sfrrns WALTER H. DIFFENI-DALL, OF HAGEBSTOWN, MARYLAND.

To all whom t may concern:

Be it known that I, WALTER H. Birmin- DALL, a citizen of the United States, and resident of Hagerstown, Maryland, have invented certain new and `useful Improve ments in Oil-Torches, ofwhich the following is a specification. y

The invention is an improvement in oil burning torches for use in heating metals which are to be united or inmaking repairs in machine shops and for like purposes.

rlhe invention consists in the features and combination and arrangement of parts hereinafter described and particularly pointed out in the claims.

4 In the drawings accompanying this specilication:

Figure l is a sectional Aview of the burner.

Fig. 2 is a plan View of the coil which forms a part of the supply pipe leading to the burner nozzle.

Fig. 3 is a side view of the burner and the means for supplying thefsame with. fuel.

Fig. 4 is a plan View of Fig. S.

Fig'. 5 is a plan view of a modification.

The burner properincludes a shell l having' a nozzle portion 2, these parts being of tapered form, and I provide any suitable means for removably securing them together, such a-s the bolts 3 passing through the lugs 4,011 said parts. The nozzley portion 2 at its large end fits in a seat formed within the outwardly iiared or positioned rim 5 of the mainshell portion l. In rear of the shell l and spaced apart therefrom I provide a coil of pipe 6, which forms a continuation of the supply pipe 7 through which a mixture of' oil and air are delivered to the burnertip S, which is formed at the end of the axial extension 9 of the coil of pipe, this tip being` directed so that the fiame will be projected axially of the nozzle.

The coil, as above stated, is spaced apart from the base of the shell and the tip is substantially in the plane of base line of the shell. The coil is held in this spaced apart relation by clips or brackets 10, extending from the shell to whichfthey'are bolted, or otherwise secured, the lower ends of the brackets being inturned and welded to the coil. The coil is of a diameter substantially co-equal with that of the interior of the burner'shell and it is in position to receive the back lire or heat from the said shell, so that the oil will be gasified before' reaching theburner tip. By having the coil spaced Specification of Letters Patent. Patent-.ed Sepp, 17, i918, Application ined .apra so, 1918,' serial no. 231,686. i

apart from the rear of the base of the conical shell, or nozzle, complete combustion is secured because the air is free to pass to the burner tip through the space existing between the base of the cone and the coil and the entrance of air may take place from all points around the circumference of the base of the cone.

The position of the coil, however, must bear a certain relation to the base of the cone and not be too far away, because under-the latter circumstances the point of combustion would be not well within the cone, .but at such a position that the flame would pass out radially from the base of the cone -and would not be directed onto the surface to be heated at the nozzle end or small end of the cone.

Further the coil must not be placed too near the base of the cone, as under this a1'- rangement the dame would be suppressed or smothered out when the nozzle end of the cone is positioned close to the surface to he heated, because a proper air supply could not then reach the llame for proper combustion. If the nozzle or small end of the cone is placed very near to the surface being operated on the` flame will back-fire freely through the base of the cone and laterally through the space between the coil and the said base and the llame will not smother outV but will be maintained.

Some air will reach the point of combustion through the coil. I employ a closely coiled pipe, as this will afford a firm support for the cone, which is attached thereto, and will also provide for a sulheient length of pipe in the coil to insure proper heating of the oil before it reaches the burner tip.

My burner is adapted for use with a high degree of heat, because thecoil of pipe being located exteriorly to the base of the cone will not. be burned out, because of the high heat of the flame, which it might do were the coil located within the shell-or cone.

The cone is made in sections in order that the .smallor nozzle end may be renewed without disturbing` thc coil or the base of the shell which may remain attached to each other. @nly a single supply pipe leads to tht` coil, and this is intended to feed air and oil andA for this purpose the supply pipe is connected 'with a tank l1 containing t-he oil, air under pressure beingadmitted `to the top of the tank through a pipe 12, having a cheek va'lve 13 therein, said pipe4 being lbe vaporized in this controlled by a glo e valve le. i The check 4valve', lB'is adapted to maintain the pressure in the upper-fend of the tank. @spending into this teni; is an oil pipe l5, leading to near the bottoni thereof, and connecting with .the upper end of this pipe is a suitable fitting, or fittings, having a globe valve at 16, a check Valve at 17, and e needle valve at. 1.8, the fitting connecting with a 'flexible hose y19, which is snit-ably connected with thecoil at the burner. y Q l The tank has also coni'iected therewith a iitting or fittings, communicating with Vthe upper end oi the tank, so that the coinpressed air therein may be discharged through the said fittings and e l i8' connects the oil discharge tting with the air discharge fitting, so the air inpassing to the Aflexible hosewill have an ejector ac tion on the oil andf' the oil vtroni the tank, this action being assisted by the pressure of the air in the upper part of the tank. A check valve is provided at 20 in the air fitting and a globe Valve is provided at 2l, controlling the discharge of from the tank, and another globe valve is arranged ,at 22 to control the discharge of the mixture of eiland air 'to the burner. As

shown in llig.A 5 the connection between the oil and air pipes may be arranged at the point remote from the tank and a globe valve may be arranged at 23 and check valves at 24, 25 in the air and oil pipes, re-

spectively, and also globe valves 2,6'and 27 may control the discharge of ai'r and oil from the tank.

ln the operation ofthe apparatus the air is turned on so as tolbe discharged into the pipe leading to the burner and then the oil is slowly admitted into said vconduit or pipe until the 'mixture appears at the nipple of ,the torch or burner, which is then lighted. @he flame within the cone will create a bacio fire ci' flame against the coil andthe oil will coil before reaching the lburner tip.

Wha-t clain is:

i. in combination a burner having a coniincassi cal nozzle, a burner tip directing its llame axiallyv ot the said nozzle, and a coil of pipe in rear of the burner tip to supply the tip with fuel, said coil being coaxially arranged with the nozzle and Yloca-ted outside of the nozzle and spaced apart from the base thereof, leaving a passage for the entrance of air from all sides between it'and the base of the burner nozzle, said' coil providing a guard extending substantially across the opening at the base of the cone to provide a guard against the backward passage vofthe flame and allowing lateral passage of the deine when checked at the dischar e end of the-nozzle, substantially as descri ed.

2. ln' combination a burner having a' conical nozzle, burner at the base of the nozzle directed aiially thereof, and a coil of pipe, to supply the tip with fuel, said coil being arranged in one plane parallel with and spaced. apartroni the base of the conical nozzle to provide for the passage ofr air from all sides to the said tip, said coil providing a guard against backward and lateral passage of the flame under normal conditions, but allowing lateralpassage of' the flame when the flame is choked at the' discharged end of 'the nozzle, substantially as described. Y

3. ln combination a nozzle, a burner tip axially disposed relative thereto, a coil of pipe connecting with the .burner tip and outside of and spaced apart from the base of the nozzle, and bracket for supporting and spacing the nozzle from the coil, substantially as described.

ln combination a nozzle lorined in Sections including a base section, means for removably holding said sections together, a coil Ioi'itside oir'. and spaced apart from the base section, and means for supporting the base oi' said nozzle from the said coil, substantially as describeol.V

in testimony whereof l ailix my signature.

@WALTER lll. DFFENDALL.

Witnesses;

Onivnniisinrns, Jr., ennemi Moons. 

